Sheet-metal-working machine



(No Model.)

P. E. HEINIG. SHEET METAL WORKING MACHINE.

No. 546,468. Patented Sept. 17, 1895.

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WITNESSES: H6 2 v 190W 1W We ATTORNEY.

fiNUREW EGRAHAM. PIIUTO-LITHO-WASHINGTDN, 0,0

' NITED TATES FREDERICK E. HEINIG, OF LOUISVILLE, KENTUCKY.

SHEET-METAL-WORKLING MACHlNE.

SIECIFICATION forming part of Letters Patent N 0. 546,468, datedSeptember 1'7, 1895.

Application filed February 28, 1895.

To all whom it may concern:

Be it known that I, FREDERICK E. HEINIG, of Louisville, in the county ofJ efierson and State of Kentucky, have invented new and usefulImprovements in Sheet-Metal-Working Machines, of which the following,taken in connection with the accompanying drawings, is a full, clear,and exact description.

This invention relates to sheetmetahworking machines, and particularlyto that class of machines used in heading sheet-metal pails, &c., and ishereinafter more fully described, and specifically pointed out in theclaims.

In the annexed drawings, Figure l is an elevation of the machine with asheet-metal pail supported in position on the carryingbracket at theleft and the parts in position for performing their functions insecuring the cover of the said pail in position. Fig. 2 is an enlargeddetail view of the heading devices used in closing the vessel; Fig. 3 isa separate plan view of the roller-carrying yoke E, and Fig. 4 is adetached View showing parts in their extreme position.

The object sought to be accomplished is to securely fasten the cover ofthe vessel in position, so that it cannot be accidentally removed whenonce placed in the desired position, and to that end the machine isemployed.

In the drawings, A is the standard of the machine.

B is the supporting-bracket for the work.-

0 represents the driving-pulleys.

O is the vertical driving-shaft.

G" is the foot-treadle for bringing the parts into operative position.

D is the main supporting-spindle for the heading devices.

E isa roller-carrying yoke carrying the two pressure-rolls E at itsends.

F is the clamping-collar, adapted to securely hold thedownwardly-extending flange 4 of the cover 2 in form and position.

G is a spring-held step adapted to serve as a bearing-plate to press onthe upper face of the top and hold it down and co-operating withclamping-collar F.

H H are forming-rolls, rounded on their peripheral faces, and are usedto bend the sheet-metal top into position and compress the metal thereofunder the intruding cirderial No. 539,986. (No model.)

cumferential head 5, which may consist of a wire inclosediwith aninturned portion of the metal, or it may be merely an intruding bead, atthe Will of the manufacturer, though the inclosed wire is preferred, asit forms a much stronger head.

e e are downwardly-projecting ears, to which one end of the levers H issecurely pivoted, while the inner ends of said levers H are loosely heldin open sockets 1c in the thrust block K.

01. is an expansion-spring bearing on the yoke E to hold it and itsconnected parts yieldingly in their operative position.

a is a similar spring bearing on the upper end of the shank g of thestep G, so as to make it more or less yielding, while the pin 12',entering said shank through the slot (9, prevents the same dropping outwhen the working parts are raised from their duty.

In practice a shoulder c is provided on the inner face of theclamping-collar'F, so as to prevent angularity in the bend of the metalat that point, the under side of said shoulder being rounded insubstantially the arc of a circle struck from the center of the head 5of the vessel. The vessel 1 is preferably provided with the bead 3,which serves as a stop for the down-turned flange 4 of the cover 2.

The operation of the machine is as follows: The sheet-metal vessel 1,with its top 2, provided with downturned flange 4, is placed upon thebracket B with the clamping-collar F in position, as shown in thedrawings. The treadle C is depressed, so as to bring the spindle D withits suspended connections down, the step G resting on the upper face ofthe top 2. Continuing the pressure, the rolls E are made to bear uponthe upper side of the clamping-collar F, so as to hold it in position.Additional pressure upon the treadle C" will cause the spindle D todescend, carrying with it the thrust-block K. The position of the yokeE, (shown-in Fig. 2,) brings the formingrollers H into close contactwith the metal of the cover and as the spindle D moves down the innerend of the lever H is carried down by the thrust-block K until,

finally, the forming-rollers H are made to as rapidly, causing thebearing-rollers E to travel around on the upper side of the collar F andto carry with them, through the ears 6 6, depending from the yoke E, theformingrollers H, which continue to bear upon and force the metal of thetop down and under the head 5 of the pail, thus sealing the samesecurely in position, as is more clearly illustrated in Fig. 4 of thedrawings,in which the parts are at their extreme position, ready to beretracted upon relieving the pressure upon the foot-treadle 0.

Having described my invention, What I claim as new, and desire to secureby Letters Patent, is-

1. In a machine for the described purpose, a base step, a carryingspindle, a thrust block connected thereto, a roller carrying yoke,pressure levers pivotally connected to said yoke at one end and to thethrust block at the other end and forming rollers on said levers allcombined substantially as specified.

2. In a machine for the described purpose, a support for the Work, acollar for clamping the cover flange, a yoke, a thrust block, above theposition of the Work, levers connected at one end to said yoke andadapted to be carried at the opposite end in said thrust block andforming rollers on said levers, all combined substantially as specified.

3. In a machine for the described purpose, a support for the Work, acollar for clamping the cover flange, a pair of pressure rolls, acarrying yoke for said rolls, a pair of forming rolls, a pair of pivotedlevers carrying said forming rolls and a thrust block carrying the innerends of said levers, substantially as specified.

In testimony whereof I have hereunto signed my name, in the presence oftwo attesting witnesses, at Louisville, in the county of Jefferson, inthe State of Kentucky, this 15th day of December, 1894:.

FREDERICK E. IIEINIG.

Witnesses:

FREDERICK H. GIBBS, A. E. MUELLER.

